Split ScalaCheck into JVM and JS projects
Merge branch 'master' into scalacheck-js

Conflicts:
	build.sbt
travis: Separate jvm and js builds
Implement a test runner with scalajs.testbridge.

Move tests that doesn't work on JS yet to the JVM sources.
Remove temporary main classes
Add Scala.js example project
Fix Scala.js URL
Update scalajs example build file